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Effects of acoustic characteristics of combined construction noise on annoyance

机译：组合建筑噪声的声学特性对烦恼的影响

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Because the acoustic environments of construction sites include multiple noise sources from various construction machines, it is necessary to consider the influence of combined noise on annoyance. The aim of this study is to examine the effects of the acoustic characteristics of combined construction noise on annoyance. Six construction machines, including machines for foundation work (pile drivers, earth augers, and payloaders) and demolition work (breakers, bulldozers, and excavators) were selected as noise sources in construction sites, and auditory experiments were designed to quantify the annoyance caused by the machines individual and combined noise. The results show that both individual and combined noise correlate well with the equivalent sound level (L-Aeq), but that the annoyance caused by combined noise is significantly higher than the annoyance caused by individual noise when L-Aeq increases over 65 dBA. Among the psychoacoustic measures, loudness is the most important in determining the annoyance caused by individual noise, whereas both loudness and roughness significantly impact the annoyance caused by combined construction noise. Ranges of an optimum stationary-to-mobile machine noise ratio between two construction machine noises are suggested to minimize the annoyance caused by combined noise. Optimum stationary-to-mobile machine noise ratio ranges usually include 0 dBA when reference construction noise levels (e.g., pile driver or breaker) are lower than 60 dBA, whereas the stationary-to-mobile machine noise ratio should be greater than 5 dBA as construction noise levels exceed 65 dBA. These findings provide useful information to establish effective noise management plans for combined noise sources in construction sites. (C) 2015 Elsevier Ltd. All rights reserved.
机译：由于建筑工地的声学环境包括来自各种建筑机械的多个噪声源，因此有必要考虑组合噪声对烦恼的影响。这项研究的目的是研究组合建筑噪声的声学特性对烦恼的影响。选择了六台建筑机械，包括用于基础工作的机械（打桩机，推土机和有效载荷器）和用于拆除工作的机械（破碎机，推土机和挖掘机）作为建筑工地的噪声源，并设计了听觉实验来量化由噪声引起的烦恼。机器的各个噪音和综合噪音。结果表明，单个噪声和组合噪声与等效声级（L-Aeq）均具有良好的相关性，但是当L-Aeq超过65 dBA时，组合噪声引起的烦扰明显高于单个噪声引起的烦扰。在心理声学措施中，响度对于确定由个体噪声引起的烦扰是最重要的，而响度和粗糙度都会显着影响由组合建筑噪声引起的烦扰。建议在两个建筑机械噪声之间的最佳固定与移动机械噪声比的范围内，以最大程度地减少由组合噪声引起的烦扰。当参考建筑噪音水平（例如打桩机或破碎机）低于60 dBA时，最佳的固定/移动机器噪声比范围通常为0 dBA，而固定/移动式机器噪声比应大于5 dBA，因为建筑噪音水平超过65 dBA。这些发现为建立施工现场综合噪声源的有效噪声管理计划提供了有用的信息。 （C）2015 Elsevier Ltd.保留所有权利。

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